The genus Periclimenes contains a large number of species of shrimp that live symbiotically with larger animals, most commonly sea anemones, although some corals, sea stars, sea cucumbers. In the case of the imperial shrimp, P. imperator, the Spanish dancer sea slug, Hexabranchus sanguineus, is often the preferred host. The genus contains the following species: \n* Periclimenes imperator on a sea cucumber \n* Periclimenes colemani on an Asthenosoma varium. \n* Periclimenes soror on a pillow starfish Culcita schmideliana. \n* Periclimenes pedersoni \n* Periclimenes magnificus \n* Periclimenes imperator \n* \n* \n* \n* \n*